"My heart's a little more guarded," she said. "I showed so much of myself in the past. You almost get embarrassed showing this big wedding, which I would have had cameras or not. So I think you want to just guard yourself."

Meanwhile, the family may be heading to London for the Olympics this summer. Khloé's hubby, 32, is hoping to be on the U.S. basketball team. He'll find out the he made the cut in early July.

"I've never been to London," said Khloé, 27. "I'm just going to stand in front of Buckingham Palace and screaming, 'Let me in!'"